[devdocsgjs/main: 1752/1867] Update dependency ruby to v2.7.4

[Andy Holmes <andyholmes src gnome org>]

commit 1a863accbecdba9626390992c51abf190965e692
Author: Renovate Bot <bot renovateapp com>
Date:   Wed Jul 7 22:29:52 2021 +0000

    Update dependency ruby to v2.7.4

 .ruby-version | 2 +-
 Dockerfile    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.ruby-version b/.ruby-version
index 2c9b4ef4..a4dd9dba 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.7.3
+2.7.4
diff --git a/Dockerfile b/Dockerfile
index 281f1ef8..35b84a2e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.7.3
+FROM ruby:2.7.4
 
 ENV LANG=C.UTF-8
 ENV ENABLE_SERVICE_WORKER=true